In the
Dragon Ball franchise, all beings possess
ki, a vital force present in all life; beings with high levels of
ki can use it to perform supernatural feats, including in combat. Some beings are capable of sensing the Power Level or of others, denoting their strength as a combatant. Aliens serving the galactic tyrant Frieza possess "scouters," devices that duplicate this ability technologically and can quantify different combatants' power levels objectively, though warriors can employ
ki-manipulation techniques to mask the full extent of their strength. In the episode "
The Return of Goku," Goku returns to the Earth after intense training in the Other World to confront Vegeta and his comrade
Nappa. As Goku powers up in rage after learning they had killed his allies
Yamcha,
Tenshinhan,
Chaozu, and
Piccolo right before his arrival, Vegeta senses an explosive increase in his power level through his scouter device. In response to Nappa's query about Goku's power level, Vegeta yells: "It's over nine thousand!", crushing his scouter in his fist. In the original Japanese version of the scene, and most versions subbed in languages other than English, Vegeta actually says "It's over 8000!". This has occurred several other times where power levels are given more as estimates than accurate figures. Craig Elvy from
Screenrant claimed that this phrase is actually a mistranslation from the original Japanese anime. He noted that the
Daizenshuu 7 book quoted the dubbing team as saying that speaking "9000" in English was a better fit for Vegeta's animated mouth movements; on the other hand, Elvy made the assertion that ''Dragon Ball Z's'' Ocean dub "was notorious for making translation errors (such as Goku believing Vegeta killed Grandpa Gohan or Bardock being a so-called "great scientist") which can't be explained away so easily". When
Dragon Ball Z was re-dubbed by Funimation with
Christopher Sabat as the voice of Vegeta, the "It's Over 9000" line was retained, and has featured in most English re-dubs and video games ever since. ==Spread==